Measure in using intelligent electromagnetic
flowmeter, if you hear the noise from the flow meter, in addition to will be affected by the ambient conditions outside noises, the measurement of fluid from the fluid noise is also a noise is very widespread.
So, what is how the electromagnetic flowmeter fluid noise?
1, high velocity of flow noise.
High-speed flow of fluid near the rough fabrics and electrode parts velocity divergence and change happens, and measuring the pipeline center axis velocity of weight of the same or the opposite role by signal weighting function, the electrode signal caused great influence, which constitutes a positive error.
2 the noise and activity.
This is caused by fluid friction material and electrode positive and negative ions from the electrolyte fluid free, due to the effect of magnetic field of the electrode signal, part of the free ions will move to the electrode structure of noise voltage.
In addition, the electrical conductivity of the fluid and PH change can cause fluid noise sharply.
3, slurry noise.
This is due to the liquid medium containing solid touch attack electrode makes the electrode surface passivation layer is damaged, then the chemical equilibrium lost because of this, the electrode metal material and fluid contacts will regenerate the surface passivation layer, then again achieve electrochemical equilibrium condition, in this kind of damage and to achieve balance in the process of repeatedly, electrode potential between constant ups and downs, the fluid noise of the traffic signal.
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